gigantosaurus sauropod size Riddles

There is a creature which could double its size every day. So, if the creature is put in a tank then it will fill the tank in 10 days. How many days would it take for the creature to fill a half and how many days to fill a quarter of the tank?

I'm not pants but I have pockets; I can't dance but I have four legs. I come in different sizes depending on the size of the room. What am I?

I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. So tell me what I must be! What am I?

We hurt without moving. We poison without touching. We bear the truth and the lies. We are not to be judged by our size.

Paul's height is six feet, he's an assistant at a butcher's shop, and wears size 9 shoes. What does he weigh?

Only one color, but not one size, Stuck at the bottom, yet easily flies. Present in sun, but not in rain, Doing no harm, and feeling no pain. What is it?

If you pile up coins one on top of another until they get as high as the Empire State Building - would you be able to fit them all into one average sized room? (The 'Google Riddles' are interview questions those who wish to get hired were asked).

Dr. Miller was staying with his cousin, Alfred, in Alfred’s lakeside cabin. They were setting up Alfred’s will. Since Dr. Miller was Alfred’s closest living relative, much of Alfred’s estate was being left to him. One day, Alfred went to Dr. Miller very upset. “Doctor,” he began, “I have just found out that an old enemy is out to get me. He is coming very soon. Where will I go? Where can I hide? If he finds me, he will surely kill me. I do not have time to leave this cabin and hide in the woods.” Dr. Miller thought for a moment, and then grabbed a 5′ long bamboo fishing pole, with a diameter the size of a quarter. “Alfred, follow me out to the lake. This lake is 4′ deep. If you lie on the bottom of the lake and breathe through this pole, your enemy will never find you. I will be in the bulrushes with a shotgun, and I will shoot him when he comes. I will swim down to find you when he is gone.” Alfred thought that was a great idea and went down to the lake with the bamboo pole in his mouth. A few hours later, a ranger passed by. He found Alfred’s body. Dr. Miller told the police of the circumstance, and that Alfred had probably panicked, and died. Police arrested Dr. Miller on the charge of murdering Alfred. Why?